GTP[S] stimulates migration of electropermeabilized neutrophils via a pertussis toxin-sensitive G-protein.
Cell Signal
; 5(3): 299-304, 1993 May.
Article
in En
| MEDLINE
| ID: mdl-8347421
ABSTRACT
Electropermeabilized neutrophils were used to study the role of G-proteins in neutrophil migration. Rabbit neutrophils, under specific conditions, retained their ability to migrate after electropermeabilization. Introduction of guanosine-5'-[3-thio] triphosphate (GTP[S]) into the cell interior stimulated random migration and enhanced migration activated by a suboptimal concentration of formyl-methionyl-leucyl-phenylalanine (fMet-Leu-Phe) (10(-11) M). GTP[S] had no effect on random migration by intact cells, or on migration of intact cells activated with a suboptimal concentration of fMet-Leu-Phe, indicating that the effect of GTP[S] was intracellular. The effects of GTP[S] were inhibited by pertussis toxin and by guanosine-5'-[2-thio] diphosphate (GDP beta S) indicating that a pertussis toxin-sensitive G-protein was involved. GTP stimulated random migration to the same extent as GTP[S], but had only a small effect on migration activated by a suboptimal concentration of fMet-Leu-Phe (10(-11) M). Several other nucleotides tested had no effect on random migration or migration activated with 10(-11) M fMet-Leu-Phe. The results show that neutrophil migration can be potentiated by direct activation of a pertussis toxin-sensitive G-protein, and the results obtained with GTP suggest that possibly more than one G-protein is involved in this process.
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Collection:
01-internacional
Database:
MEDLINE
Main subject:
Virulence Factors, Bordetella
/
Signal Transduction
/
Guanosine 5'-O-(3-Thiotriphosphate)
/
GTP-Binding Proteins
/
Pertussis Toxin
/
Neutrophils
Type of study:
Diagnostic_studies
Limits:
Animals
Language:
En
Journal:
Cell Signal
Year:
1993
Document type:
Article
Affiliation country:
Netherlands